body {
    background-color: black;
    padding: 0;
    margin: 0;
}

h1 {
    color: rgb(76, 112, 127);
    font-size: 2rem;
}

.controls {
    display: flex;
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    align-items: center;
    justify-content: space-between;
    width: 7rem;

    background-color: white;
    padding: .25rem 1rem;
    box-shadow: rgb(155 155 155) 0px 5px 10px;
    border-radius: .5rem;
}

.btns {
    display: flex;
    width: 4.5rem;
    justify-content: space-evenly;
}

.btn {
    width: 1.5rem;
    height: 2rem;
    cursor: pointer;
    display: block;
    background-color: white;
    border: none;
    padding: 0;
}

.btn img {
    width: 100%;
    height: 100%;
}

.btn.disable {
    pointer-events: none;
    opacity: 0.2;
}

.page {
    color: #333;
    font-family: 'Times New Roman', Times, serif
}

section {
    box-sizing: border-box;
    background-color: white;
    font-size: 1.25rem;
    padding: 2rem 3rem;

    width: 100vw;
    height: 100vh;
    position: absolute;
}

section:first-child,
section:last-child {
    font-size: 1.5rem;
    background-color: rgb(76, 112, 127);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

section:first-child h1,
section:last-child h1 {
    color: white;
    font-size: 3rem;
}